Fibre mat and products containing fibre mats

Abstract

A hybrid fibre mat comprises glass fibres, polymer fibres and binding agents, the glass fibres having a mean diameter of between 6 and 13 μm and a mean length of between 6 and 15 mm, the polymer fibres being staple fibres having a mean fineness of between 0.2 and 0.6 dtex and a mean length of between 2 and 4 mm and the percentage by weight of the polymer fibres being between 5 and 20% of the dry fibre mat. Such a hybrid fibre mat being suitable in particular as a covering for interior elements, a ceiling panel or other interior cladding elements and, provided with an impregnation (for example plastisol), in particular as a structural layer of a cushioned vinyl floor covering. For the production thereof, preferably water which contains the glass fibres and the polymer fibres is passed in a circuit through a band screen, the fibre mixture in the form of a fibre layer with a predetermined layer thickness is deposited on the band screen, excess circuit water is removed from the fibre layer, binding agent is added to the fibre layer and the fibre layer to which binding agent has been added is dried.

1 . Fibre mat, namely hybrid fibre mat comprising glass fibres, polymer fibres and binding agents having the following features:
 the glass fibres have a mean diameter of between 6 and 13 μm and a mean length of between 6 and 15 mm;   the polymer fibres are staple fibres having a mean fineness of between 0.2 and 0.6 dtex and a mean length of between 2 and 4 mm;   the percentage by weight of the polymer fibres is between 5 and 20% of the dry fibre mat.   
     
     
         2 . Hybrid fibre mat according to  claim 1 , characterised in that the percentage by weight of the binding agent is between 15 and 35% of the dry fibre mat. 
     
     
         3 . Hybrid fibre mat according to  claim 2 , characterised in that the percentage by weight of the binding agent is between 20 and 30% of the dry fibre mat. 
     
     
         4 . Hybrid fibre mat according to  claim 1 , characterised in that the polymer fibres have a mean fineness of between 0.3 and 0.4 dtex. 
     
     
         5 . Hybrid fibre mat according to  claim 1 , characterised in that the polymer fibres have a mean length of between 2.5 and 3.5 mm. 
     
     
         6 . Hybrid fibre mat according to  claim 1 , characterised in that the polymer fibres consist of PET. 
     
     
         7 . Hybrid fibre mat according to  claim 1 , characterised in that the glass fibres have a mean diameter of between 7 and 10 μm. 
     
     
         8 . Hybrid fibre mat according to  claims 1 , characterised in that the diameter of the glass fibres is a maximum of 10 μm and in that the length of the glass fibres is a maximum of 15 mm. 
     
     
         9 . Hybrid fibre mat according to  claim 1 , characterised in that the glass fibres have a mean length of between 7 and 9 mm. 
     
     
         10 . Hybrid fibre mat according to  claim 1 , characterised in that the binding agent comprises urea resin, preferably a mixture of urea resin and a polymer dispersion. 
     
     
         11 . Hybrid fibre mat according to  claim 1 , characterised in that the binding agent comprises polyacrylic acid binders, preferably a mixture of polyacrylic acid binders and a polymer dispersion. 
     
     
         12 . Hybrid fibre mat according to  claim 1 , characterised in that the glass fibres consist of C-glass and/or E-glass. 
     
     
         13 . Hybrid fibre mat according to  claim 1 , characterised in that it has a surface weight of between 25 g/m 2  and 80 g/m 2 , preferably of between 40 g/m 2  and 60 g/m 2 . 
     
     
         14 . Hybrid fibre mat according to  claim 1 , characterised in that the percentage by weight of the polymer fibres is between  10  and  15 % of the dry fibre mat. 
     
     
         15 . Hybrid fibre mat according to  claim 1 , characterised in that it is provided with an additional impregnation. 
     
     
         16 . Hybrid fibre mat according to  claim 15 , characterised in that the impregnating agent is plastisol. 
     
     
         17 . Cushioned vinyl floor covering having a useable layer and a structural layer, the structural layer comprising a hybrid fibre mat provided with an impregnation according to  claim 15  or  claim 16 . 
     
     
         18 . Use of a hybrid fibre mat according to  claim 1 , as a covering for interior elements, in particular as a ceiling panel or other interior cladding element. 
     
     
         19 . Use of a hybrid fibre mat according to  claim 1 , as a surface coating of a construction panel, in particular a mineral ceiling panel or wall panel. 
     
     
         20 . Use of a hybrid fibre mat according to  claim 1 , as a wall covering. 
     
     
         21 . Method for producing the hybrid fibre mat according to  claim 1 , water, which contains the glass fibres and the polymer fibres, being passed in a circuit through a band screen,
 the fibre mixture, in this case in the form of a fibre layer with a predetermined layer thickness, being deposited on the band screen, excess circuit water being removed from the fibre layer,   binding agent being added to the fibre layer and the fibre layer to which binding agent has been added being dried.